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| Great white shark, research identification photograph. A great white shark is countershaded, with a dark gray dorsal color and light gray to white underside, making it more difficult for the shark's prey to see it as approaches from above or below in the water column. The particular undulations of the countershading line along its side, where gray meets white, is unique to each shark and helps researchers to identify individual sharks in capture-recapture studies. Guadalupe Island is host to a relatively large population of great white sharks who, through a history of video and photographs showing their countershading lines, are the subject of an ongoing study of shark behaviour, migration and population size. Image ID: 28769 Species: Great white shark, Carcharodon carcharias Location: Guadalupe Island (Isla Guadalupe), Baja California, Mexico | Great white shark, research identification photograph. A great white shark is countershaded, with a dark gray dorsal color and light gray to white underside, making it more difficult for the shark's prey to see it as approaches from above or below in the water column. The particular undulations of the countershading line along its side, where gray meets white, is unique to each shark and helps researchers to identify individual sharks in capture-recapture studies. Guadalupe Island is host to a relatively large population of great white sharks who, through a history of video and photographs showing their countershading lines, are the subject of an ongoing study of shark behaviour, migration and population size. Image ID: 28770 Species: Great white shark, Carcharodon carcharias Location: Guadalupe Island (Isla Guadalupe), Baja California, Mexico | Snow geese blast off. After resting and preening on water, snow geese are started by a coyote, hawk or just wind and take off en masse by the thousands. As many as 50,000 snow geese are found at Bosque del Apache NWR at times, stopping at the refuge during their winter migration along the Rio Grande River. Image ID: 21839 Species: Snow goose, Chen caerulescens Location: Bosque del Apache National Wildlife Refuge, Socorro, New Mexico, USA |
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| Sandhill crane spreads its broad wings as it takes flight in early morning light. This crane is one of over 5000 present in Bosque del Apache National Wildlife Refuge, stopping here during its winter migration. Image ID: 21853 Species: Sandhill crane, Grus canadensis Location: Bosque del Apache National Wildlife Refuge, Socorro, New Mexico, USA | Snow geese blast off. After resting and preening on water, snow geese are started by a coyote, hawk or just wind and take off en masse by the thousands. As many as 50,000 snow geese are found at Bosque del Apache NWR at times, stopping at the refuge during their winter migration along the Rio Grande River. Image ID: 21861 Species: Snow goose, Chen caerulescens Location: Bosque del Apache National Wildlife Refuge, Socorro, New Mexico, USA | Snow geese blast off. After resting and preening on water, snow geese are started by a coyote, hawk or just wind and take off en masse by the thousands. As many as 50,000 snow geese are found at Bosque del Apache NWR at times, stopping at the refuge during their winter migration along the Rio Grande River. Image ID: 21862 Species: Snow goose, Chen caerulescens Location: Bosque del Apache National Wildlife Refuge, Socorro, New Mexico, USA |
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| Sandhill crane spreads its broad wings as it takes flight in early morning light. This crane is one of over 5000 present in Bosque del Apache National Wildlife Refuge, stopping here during its winter migration. Image ID: 21870 Species: Sandhill crane, Grus canadensis Location: Bosque del Apache National Wildlife Refuge, Socorro, New Mexico, USA | Snow geese blast off. After resting and preening on water, snow geese are started by a coyote, hawk or just wind and take off en masse by the thousands. As many as 50,000 snow geese are found at Bosque del Apache NWR at times, stopping at the refuge during their winter migration along the Rio Grande River. Image ID: 21874 Species: Snow goose, Chen caerulescens Location: Bosque del Apache National Wildlife Refuge, Socorro, New Mexico, USA | Sandhill crane spreads its broad wings as it takes flight in early morning light. This crane is one of over 5000 present in Bosque del Apache National Wildlife Refuge, stopping here during its winter migration. Image ID: 21913 Species: Sandhill crane, Grus canadensis Location: Bosque del Apache National Wildlife Refuge, Socorro, New Mexico, USA |
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| Snow geese blast off. After resting and preening on water, snow geese are started by a coyote, hawk or just wind and take off en masse by the thousands. As many as 50,000 snow geese are found at Bosque del Apache NWR at times, stopping at the refuge during their winter migration along the Rio Grande River. Image ID: 21918 Species: Snow goose, Chen caerulescens Location: Bosque del Apache National Wildlife Refuge, Socorro, New Mexico, USA | Snow geese blast off. After resting and preening on water, snow geese are started by a coyote, hawk or just wind and take off en masse by the thousands. As many as 50,000 snow geese are found at Bosque del Apache NWR at times, stopping at the refuge during their winter migration along the Rio Grande River. Image ID: 21919 Species: Snow goose, Chen caerulescens Location: Bosque del Apache National Wildlife Refuge, Socorro, New Mexico, USA | Snow geese blast off. After resting and preening on water, snow geese are started by a coyote, hawk or just wind and take off en masse by the thousands. As many as 50,000 snow geese are found at Bosque del Apache NWR at times, stopping at the refuge during their winter migration along the Rio Grande River. Image ID: 21950 Species: Snow goose, Chen caerulescens Location: Bosque del Apache National Wildlife Refuge, Socorro, New Mexico, USA |
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| Sandhill crane spreads its broad wings as it takes flight in early morning light. This crane is one of over 5000 present in Bosque del Apache National Wildlife Refuge, stopping here during its winter migration. Image ID: 21967 Species: Sandhill crane, Grus canadensis Location: Bosque del Apache National Wildlife Refuge, Socorro, New Mexico, USA | Sandhill crane spreads its broad wings as it takes flight in early morning light. This crane is one of over 5000 present in Bosque del Apache National Wildlife Refuge, stopping here during its winter migration. Image ID: 21968 Species: Sandhill crane, Grus canadensis Location: Bosque del Apache National Wildlife Refuge, Socorro, New Mexico, USA | Sandhill crane spreads its broad wings as it takes flight in early morning light. This crane is one of over 5000 present in Bosque del Apache National Wildlife Refuge, stopping here during its winter migration. Image ID: 22027 Species: Sandhill crane, Grus canadensis Location: Bosque del Apache National Wildlife Refuge, Socorro, New Mexico, USA |
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| Sandhill crane spreads its broad wings as it takes flight in early morning light. This crane is one of over 5000 present in Bosque del Apache National Wildlife Refuge, stopping here during its winter migration. Image ID: 22028 Species: Sandhill crane, Grus canadensis Location: Bosque del Apache National Wildlife Refuge, Socorro, New Mexico, USA | Sandhill crane spreads its broad wings as it takes flight in early morning light. This crane is one of over 5000 present in Bosque del Apache National Wildlife Refuge, stopping here during its winter migration. Image ID: 22030 Species: Sandhill crane, Grus canadensis Location: Bosque del Apache National Wildlife Refuge, Socorro, New Mexico, USA | Snow geese blast off. After resting and preening on water, snow geese are started by a coyote, hawk or just wind and take off en masse by the thousands. As many as 50,000 snow geese are found at Bosque del Apache NWR at times, stopping at the refuge during their winter migration along the Rio Grande River. Image ID: 22077 Species: Snow goose, Chen caerulescens Location: Bosque del Apache National Wildlife Refuge, Socorro, New Mexico, USA |
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| Sandhill crane spreads its broad wings as it takes flight in early morning light. This crane is one of over 5000 present in Bosque del Apache National Wildlife Refuge, stopping here during its winter migration. Image ID: 22081 Species: Sandhill crane, Grus canadensis Location: Bosque del Apache National Wildlife Refuge, Socorro, New Mexico, USA | A great white shark is countershaded, with a dark gray dorsal color and light gray to white underside, making it more difficult for the shark's prey to see it as approaches from above or below in the water column. The particular undulations of the countershading line along its side, where gray meets white, is unique to each shark and helps researchers to identify individual sharks in capture-recapture studies. Guadalupe Island is host to a relatively large population of great white sharks who, through a history of video and photographs showing their countershading lines, are the subject of an ongoing study of shark behaviour, migration and population size. Image ID: 19484 Species: Great white shark, Carcharodon carcharias Location: Guadalupe Island (Isla Guadalupe), Baja California, Mexico | Snow geese blast off. After resting and preening on water, snow geese are started by a coyote, hawk or just wind and take off en masse by the thousands. As many as 50,000 snow geese are found at Bosque del Apache NWR at times, stopping at the refuge during their winter migration along the Rio Grande River. Image ID: 21917 Species: Snow goose, Chen caerulescens Location: Bosque del Apache National Wildlife Refuge, Socorro, New Mexico, USA |
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| Snow goose in flight. Tens of thousands of snow geese stop in Bosque del Apache NWR each winter during their migration. Image ID: 21929 Species: Snow goose, Chen caerulescens Location: Bosque del Apache National Wildlife Refuge, Socorro, New Mexico, USA | Snow goose in flight. Tens of thousands of snow geese stop in Bosque del Apache NWR each winter during their migration. Image ID: 21983 Species: Snow goose, Chen caerulescens Location: Bosque del Apache National Wildlife Refuge, Socorro, New Mexico, USA | Snow geese blast off. After resting and preening on water, snow geese are started by a coyote, hawk or just wind and take off en masse by the thousands. As many as 50,000 snow geese are found at Bosque del Apache NWR at times, stopping at the refuge during their winter migration along the Rio Grande River. Image ID: 22057 Species: Snow goose, Chen caerulescens Location: Bosque del Apache National Wildlife Refuge, Socorro, New Mexico, USA |
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| Sandhill crane spreads its broad wings as it takes flight in early morning light. This crane is one of over 5000 present in Bosque del Apache National Wildlife Refuge, stopping here during its winter migration. Image ID: 21953 Species: Sandhill crane, Grus canadensis Location: Bosque del Apache National Wildlife Refuge, Socorro, New Mexico, USA |
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